After some more experimenting with different versions, I'm getting odd results. So feel free to ignore this report..
FYI, what I see is: * as noted, commits before bb6355 work fine (ie up to 3.4-rc6). * including commit bb6355, graphics freeze on the first transition after grub (Plymouth?) * the very next commit makes the (plymouth?) splash screen work, but the greeter screen display is corrupted; ctrl-alt-f2 works - if pressed immediately * this situation continues up until release v3.5^. But building v3.5 itself works perfectly! Presumably I've done something wrong here.. * v3.6-rc3 displays the splash (plymouth?) screen fine, but instead of a greeter screen, screen goes blank. I'll try to make some more sense of this in the next few days - but suggestions are welcome. Sorry if I'm posting this in the wrong place - let me know if I should create a bugzilla entry or whatever. Regards, Simon On 25/08/12 19:39, Hausensteiner Keg wrote: > Hi, > > I updated the kernel on an Ubuntu 12.04 (32-bit) install, and graphics > immediately broke. Bisection points to: > > commit bb635567291482a87e4cc46e6683419c1f365ddf > Author: Jerome Glisse <jglisse at redhat.com> > Date: Wed May 9 15:34:46 2012 +0200 > > drm/radeon: convert fence to uint64_t v4 > > > Radeon graphics are still broken for me in both 3.5.2 (from > linux-stable) and 3.6.3-rc3 - though the symptoms appear to be > slightly different. > > I'm currently running a kernel built from the commit before the above, > and everything seems sane and stable. > > I'm happy to do any tests you might find helpful.. > > == Symptoms > > When booting with above commit, grub works fine but immediately upon > attempt to switch graphics mode a solid green bar appears across the > screen. System does not respond to ctrl-alt-f2. Very repeatable. > > When booting with later releases (eg 3.5.2), the greeter screen is > displayed - sometimes correctly, sometimes with minor graphics > corruption. Immediately switching to a virtual terminal works. However > any attempt to move the mouse or log in via the greeter screen causes > graphics corruption and system no longer responds. Also consistently > repeatable. > > == OS details: > > Ubuntu 12.04 32-bit (default kernel 3.2.0-29). > > == System details: > > HP/Compaq nc8430 laptop > > $glxinfo | grep renderer ==> OpenGL renderer string: Gallium 0.4 on > ATI RV530 > > $ lsmod | grep radeon > radeon 815703 3 > ttm 71375 1 radeon > drm_kms_helper 32563 1 radeon > drm 220833 5 radeon,ttm,drm_kms_helper > i2c_algo_bit 13197 1 radeon > > $ lspci | grep VGA > 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee > ATI M56P [Radeon Mobility X1600] > > $ xrandr > Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 8192 x 8192 > VGA-0 disconnected (normal left inverted right x axis y axis) > LVDS connected 1680x1050+0+0 (normal left inverted right x axis y > axis) 331mm x 207mm > 1680x1050 60.1*+ > 1400x1050 60.0 > 1280x1024 59.9 > .... > > Regards, > Simon
